Modelled fluvial flood depth data created 2004: 1 percent annual chance for grid reference SW

This modelled fluvial flood depth data was created for the 1% annual chance of flooding situations and was produced as a by-product from the 2004 generalised modelling project. The purpose of the generalised modelling project was to fill the gaps where there was no detailed local modelled data in 2004, in order to define the extents of Flood Zones for spatial planning. A two-dimensional hydrodynamic model called JFlow was used to produce this modelled fluvial flood depth data on a 5x5m grid. Since 2004, local detailed modelling has been used to replace this generalised modelling in many areas to define the extents of Flood Zones. However this depth dataset has not been updated. INFORMATION WARNING: This data is not suitable for identifying whether an individual property will flood, for detailed decision making or for use in site specific Flood Risk or Strategic Flood Risk Assessments. Where this data is used for anything other than broad catchment or Shoreline Management Plan scale further evidence, verification and studies should be undertaken. More recent, accurate and local detailed modelling depth data is available for many places. Please contact your local Environment Agency office to see if detailed modelling is available for your area of interest. This metadata record is for Approval for Access product AfA238 Flood Zone Depth Grid Dataset 2004 Modelled fluvial flood depth data are available for the whole of England, however this data is for the 100x100km squared Ordnance Survey National Grid reference SW. If you are interested in data for another grid reference refer to the Ordnance Survey National Grid document linked below to find the relevant referencing code and search on Data.gov.uk again to download the data. https://www.ordnancesurvey.co.uk/docs/support/national-grid.pdf Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Defra, Met Office and DARD Rivers Agency © Crown Copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right 2015. Land & Property Services © Crown copyright and database right.本建模河流洪水水深数据针对年超越概率1%的洪水情景生成，系2004年通用建模项目的副产品。该通用建模项目旨在填补2004年无详细本地建模数据的空白，以明确洪水区范围用于空间规划。 本次建模河流洪水水深数据采用名为JFlow的二维水动力模型，基于5米×5米的网格生成。 自2004年起，诸多地区已采用本地详细建模替代该通用建模方法以划定洪水区范围，但本水深数据集并未进行更新。 信息警示：本数据不适用于识别单宗房产是否受淹、开展详细决策，或用于特定场地洪水风险评估及战略洪水风险评估。若将本数据用于流域或海岸线管理计划尺度以外的场景，需开展额外论证、验证与研究工作。 诸多地区已可获取更新、更精准的本地详细建模水深数据。请联系当地环境署办事处，确认您关注的区域是否有可用的详细建模数据。 本元数据记录对应获批访问产品AfA238《2004年洪水区水深网格数据集》。 建模河流洪水水深数据覆盖英格兰全境，但本数据集对应英国地形测量局（Ordnance Survey）国家网格参考编号SW的100km×100km方格区域。若您需要其他网格参考编号的数据，请参阅下述链接中的英国地形测量局国家网格文档，获取相关参考代码后，前往Data.gov.uk平台重新搜索并下载数据：https://www.ordnancesurvey.co.uk/docs/support/national-grid.pdf 署名声明：© 环境署版权及/或数据库权2016。保留所有权利。本信息部分内容基于由生态与水文中心（Centre for Ecology & Hydrology, CEH）授权的数字空间数据，© 自然环境研究委员会（NERC）；英国环境、食品与农村事务部（Defra）、英国气象局（Met Office）及北爱尔兰农业、环境与乡村事务部（DARD）河流署 © 皇家版权；© 克兰菲尔德大学；© 詹姆斯·赫顿研究所。包含英国地形测量局数据 © 皇家版权及数据库权2015。土地与产权服务处 © 皇家版权及数据库权。